YouTube's TikTok competitor Shorts will soon let users sample audio from any YouTube video
Being able to sample audio from other users' videos is one of TikTok's greatest strengths. It allows memes to percolate across the platform and lets users discover new content by watching videos with the same sound. Soon, YouTube will expand this feature in its TikTok competitor, Shorts, letting users sample sounds from any content uploaded to YouTube.
https://www.theverge.com/2021/6/7/22518828/youtube-shorts-audio-sample-feature-uk-launch